<template>
  <div class="tags" v-if="showTags">
    <ul>
      <li class="tags-li" v-for="(item, index) in tagsList" :class="{ active: isActive(item.path) }" :key="index">
        <router-link :to="item.path" class="tags-li-title">{{ item.title }}</router-link>
        <span class="tags-li-icon" @click="closeTags(index)">
          <el-icon><Close /></el-icon>
        </span>
      </li>
    </ul>
  </div>
</template>

<script lang="ts">
import { computed, defineComponent } from 'vue';
import { useSettingStore } from '../stores/modules/setting';
import { onBeforeRouteUpdate, useRoute, useRouter, onBeforeRouteLeave } from 'vue-router';
import { Close } from '@element-plus/icons-vue';

export  default defineComponent({
  components: {
    Close
  },
  setup() {
    const route = useRoute();
    const router = useRouter();
    const isActive = (path) => {
      return path === route.fullPath;
    };

    const store = useSettingStore();
    const tagsList = computed(() => store.tagsList);
    const showTags = computed(() => tagsList.value.length > 0);

    // 关闭单个标签
    const closeTags = (index) => {
      const delItem = tagsList.value[index];
      store.delTagsItem({ index });
      const item = tagsList.value[index] ? tagsList.value[index] : tagsList.value[index - 1];
      if (item) {
        delItem.path === route.fullPath && router.push(item.path);
      } else {
        router.push('/');
      }
    };

    // 设置标签
    const setTags = (route) => {
      const isExist = tagsList.value.some((item) => {
        return item.path === route.fullPath;
      });
      if (!isExist) {
        if (tagsList.value.length >= 8) {
          store.delTagsItem({ index: 0 });
        }
        store.setTagsItem({
          name: route.name,
          title: route.meta.title,
          path: route.fullPath,
        });
      }
    };

    setTags(route);
    // console.log("tags setTags:",route)
    onBeforeRouteUpdate((to) => {
      console.log('tags onBeforeRouteUpdate:', to);
      setTags(to);
    });
    onBeforeRouteLeave((to) => {
      console.log('tags onBeforeRouteLeave:', to);
      setTags(to);
    });
    // 关闭全部标签
    const closeAll = () => {
      store.clearTags();
      router.push('/');
    };
    // 关闭其他标签
    const closeOther = () => {
      const curItem = tagsList.value.filter((item) => {
        return item.path === route.fullPath;
      });
      store.closeTagsOther(curItem);
    };
    const handleTags = (command) => {
      command === 'other' ? closeOther() : closeAll();
    };

    // 关闭当前页面的标签页
    // store.commit("closeCurrentTag", {
    //     $router: router,
    //     $route: route
    // });

    return {
      isActive,
      tagsList,
      showTags,
      closeTags,
      handleTags,
    };
  }
})

</script>

<style>
.tags {
  height: 30px;
  overflow: hidden;
  background: #ccc;
  padding: 5px;
  box-shadow: 0 5px 10px #ddd;
  width: 97%;
  margin: 0 auto;
}

.tags ul {
  box-sizing: border-box;
  width: 100%;
  height: 100%;
}

.tags-li {
  float: left;
  margin: 3px 5px 2px 3px;
  border-radius: 3px;
  font-size: 12px;
  overflow: hidden;
  cursor: pointer;
  height: 23px;
  line-height: 23px;
  /* border: 1px solid #e9eaec; */
  background: #fff;
  padding: 0 5px 0 12px;
  vertical-align: middle;
  color: #666;
  -webkit-transition: all 0.3s ease-in;
  -moz-transition: all 0.3s ease-in;
  transition: all 0.3s ease-in;
}

.tags-li:not(.active):hover {
  background: #f8f8f8;
}

.tags-li.active {
  color: red;
}

.tags-li-title {
  float: left;
  max-width: 80px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  margin-right: 5px;
  color: #666;
}

.tags-li.active .tags-li-title {
  color: black;
}

.tags-close-box {
  position: absolute;
  right: 0;
  top: 0;
  box-sizing: border-box;
  padding-top: 5px;
  text-align: center;
  width: 110px;
  height: 30px;
  line-height: 30px;
  background: #fff;
  /* box-shadow: -3px 0 15px 3px rgba(0, 0, 0, 0.1); */
  z-index: 10;
}
</style>
